I'm looking for an amp that has a decent metal tone to it, and that can be used live, for under $600. Is their a chance that anyone can help me out on what amp to get and where to get it?
Used 5150 for around the same price or a little more. I got my first 5150 for 500 bucks. It never let me down. Plus they are pretty much the standard in metal amps these days.
I've heard great things about Vox. The AD30VT's seem to be the popular ones. I've heard them and can honestly they that they do sound amazing, although I haven't played through one myself.
Valveking + OD + Speaker swap

what genres do you play
Valveking CLIPS/Gear HERE